Clamp



yand more particularly to that type known as hose clamps. p.

An object of the present invention is to provide a clamp which may be used for coupling the hose connections to `radiators and the like of internal combustion engines, and to provide a clamp which. may he operated wlth comparative ease in a relatively small space lWhere the usual screwdriver and like tools usually employed can not be oon-4 veniently used.

Another object of the invention is to provide a hose clamp of this character which may be used on hose connections of vdifferent sizes so as to obviate the necessity of a dealer carrying a large stock of assorted sizes, the clamp'of the present invention b eing arranged to be contracted and extended to a considerable extent within practicable limits.

A further object of the invention is to providea clamp embodying the above characteristics and which comprisesjbut a single .operating part mounted upon the clamp as a part thereof and which is not separable therefrom so that ,all of the parts of the clamp are held in corre'ctposition for interlocking engagement and adjustment so that the parts can not be lost or dropped during the removal `and replacement of the clamp.

With the foregoing and other vobjects in view, the invention will be more fully. described hereinafter, and will be more particularly pointed out in the claims appended hereto; v

In the drawings, wherein like symbols refer tolike or corresponding parte through the several views: i

Figure 1 is a transverse section taken' v Specification of Letters Patent.

`Application led June 6,

y NEBRASKA, assieme roaunrnnn Manorac'rumue' conrnnnor on .i

l'tatented Nov. 22, reit. i921. serial No. evene?. n Fig. 4C is a detail enlarged transverse section through the free end portion of the clamping band, showing one form of depression or opening in the outer side thereof;

F ig.' 5 is a fragmentary enlarged view of the inner end of the clamping band, showing-:the b eveled guiding edge thereof; and

1g. 6 1s a transverse section through the clamping band, and the .intermediate portion of the contracting worm and its housing mounted on the band.

Referring to the drawing, 10 designatesv a spud or pipe which m-ay be a radiator or engine jacket connection which is adapted to receive thereon one end of a flexible hose ll ih the usual manner.

The clamp comprising an encircling band 412 which may be formed of a plate of brass or other suitable flexible metal and which is of suiicient length to admit of the overlapping of the free end ofthe band upon the inner end thereof 'to thus permit of the expansion and contraction of the band in tting hose 11 of different exterior diameters and for contracting the band in binding relation thereon. The inner end of the band 12, as shown particularly in Fig. 5, is p'rovided at its extremity with a beveled inner side 13 forming a rounded or inclining guiding edge ladapted to slide over the outer surface'of the hose 11 and to prevent the cutting or biting in of the inner end of the band 12 when the latter isv tightened.

Mounted u on'the inner end portion of the band 12 is a bracket le which may be constructed of sheet metal and which is substantially cylindrical in form and which has at opposite sides attaching anges 15 which" are ,overturned about the opposite lateral edges of the band 12 and perinanently secured beneath the same by solder or the like as shown in Fig. 6. The Hanges to over-hang'the band and provide shoulders 16 beneath which is slidably engaged the free end portion of the band., AThe housing and its Bauges thus provide'a guideway through which the free end of the band may beslipped and serves to slidably conneet the vfree ends of the band after the latter `has been tted about the object or hose to be compred..

- 15 are extended outwardly beyond the outer face of the band. 12 and are bent inwardly The cylindrical casing 14 is of suitable length for supporting and housing a worm 1.7 and the casing and worm are mounted upon the band with the axis of the worm extending in the same direction as the length of the band. The worm `17 is exposed through the lower side of the bracket or housing 14 and is adapted to engage the outer face of the freeend portion of the band. This free end portion of the band has in its outer face a plurality of transverse openings 18 which may be formed in any suitable manner and which are adapted tovreceive the threads of the worm 17. As shown in Fig. 4, the openings 18 may beformed by rolling concaved depressions conforming substantially'to the peripheral edges of the worm threads to provide opposing abrupt walls or shoulders against which the threads of the worm may operate in expanding and contracting the band. On one end of the worm 17 is a trunnion portion 19. which projects through the closed end of the houslng bracket 14 and a bushing 2() may be vfitted in thev opening of the bracket to form a suitable bearing for the trunnion 19. The

trunnion 19 is swaged at opposite sides against the outer side of the bushing for holding the latter in place. The otherend of the worm 17 is provided with an enlarged head or washer 21 which engages the other end of the bracket 14 to take up tension of the worm when contracting the band. The worm is also provided with a shaft 2 2 projecting outwardly from the head 21 and through which is fitted a transverse handle or pin 23, adapted to be grasped-.between the fingers for turning the worm and adjusting the band.

vthe outer side of the hose. The free end of the band is inserted in the outer end of the bracket or housing 14 beneath the shouldersV 16 and against the under side of the worm 17. The worm 17 is now turned in adirection to engage theathreads of the worm in the o penin 18 of the band and continued rotation o the worm causes the same to draw the free end of the band into and through the bracket 14, contracting the band to the desired extent. The pitch of the worm is such that it forms a lockpreventin the withdrawal of the band and thus the c amp is securely bound and locked upon the object'- without the use of clamping bolts, screws and the like which are usually em ployed. It will be noted that by provision of the worm considerable .pressure may be placedv upon the band without the use of tools and further. that the worm may be ti htened without using a screw driver or ot er relatively long tool which must be brought into line with' clamp screws land i other devices in common use.

Y The bracket 14 is permanently attached to the band and the worm is permanently mounted yin the bracket so that all of the parts are maintained in their relative ositions and need not be separated for ad]ust ment, removal or application of the clamp. I do not wish to be restricted to the size,

' form, and proportions of the various parts,

1. A hose clamp comprising aflexiblemetallic band,V a bracket mounted upon the outer side of one en d of the band and spaced therefrom to provide a passage between said end of the band and the bracket for the reception of the other end of the band, vand a rotatable worm mounted in said bracket with its axis extending in the directionI of the length of the band and exposed at its inner side toward said irst end of the band,-said other end of the band having ,openings in its outer side adapted to receive the threads of the worm therein for binding the ends of the band together and for sliding said ends one upon the other'.

2. A hose clamp comprising a iiexible rnetallic band adapted to encircle a hose and arranged with its ends in overlapping relation, a bracket carried upon the inner end of the band and being spaced therefrom to receive theA other end of the band. beneath the bracket, and a worm arranged in the bracket and exposed toward the overlapping ends of the band for binding engagement against the outer end of the band whereby Said ends of the band may be clam ed together and slid one upon the other or ex'- panding and contracting the clamp.

3. A hose clam comprising a flexible metallic bandof a lenfgth adapted tolencircle a hose and with its r relation, a bracket mounted upon the inner end of the band and having a guide-way ee ends in overlapping to engage the outer side of the outer-en of- ALExIs F. GILLET.

Witnesses ARTHUR H. S'rURGEs, E. B, Mouais. 

